Spinning spindle



July 14, 1931.. F. Elsl-:NLOHR ET AL SPINNING SPINDLE Original Filed March 22, 1924 Patented July 14,l 1931 UNITED STATES' nPATENT OFFICE FRIEDRICH' EISENLOHR AND CARL UEBEIl'iEll, 0F STUTTGART, GERMANY; GERICHTS- NOTAR STELLRECHT, ADMINISTRATOR F SAID CARL UEBELIEZN', DECEASED, AS- SIGNORS, BY MESNE ASSIGNMENTS, T0 NORMA-HOFFMANN' BEARINGS CORPORA- TION, A CORPORATION 0F NEW YORK` srINNING sriNDLE.

. Application led m1101522, 1924,'Seria1 No.' 701,032, and in G'rmanyliareh 24, 1933. Renewed,

.- v l may 27, 1930. s

vThis invention has for the object to provide an improved spinning spindleof the type wherein the upper bearing `and the footstep bearing are built rigidly in'an in lner spindle sleeve which is capable of oscillating and which is resiliently supported in a bolster tube. One object -of this invention is to provide a bearing for a. spinning spindle of relatively simple and dur- ,110 ableP construction, which can be easilyfandr readily assembled and will bedust'and oill tight. l

A' further object is to so construct the bearing as to reduce4 friction between the |15 moving parts to a minimumn4 U With these and other objects in view, our A invention consists in 4the construction, a r rangement and combination of parts as will be yhereinafter fully described and defined v in the appended' claims.'

A practical constructional form of an im proved spindle according to this .invention l is illustrated by way of examplein the accompanying drawings in which Figure 1 is a longitudinal section of the improved spindle comprising the improved up er bearing of the roller type.

Figure 2 is a'lon'gitudinal section of the improved upper bearing of the roller type, drawn to a larger scale.

f Figure 3 is a .cross section to Figure 2, likewise drawn to a larger scale. Figure 4 is a longitudinal section of a ball 'spring-mounting fbr the bearing balls' l comprising a circularly bent leaf spring .as'

shown" in Figure 1, likewise drawn to a larger scale, and

' Figure 5 is a cross sectionl to Figure 4, likewise drawn to a. larger scale..

Referring to Figure 1: a is a-spindle mounted in an inner bolster sleeve `1') by means ofwan upper bearing of the' roller type. The f l'lass-hard foot of the lspindle a rests inf'a wise glass hard footstep bearing The entire bearing is rigidly mounted in the s indle sleeve b and is closed pp b y a-du'stftig t and'oil-tighucover e whichis heldin .place by a split spring ring d.. The spindle sleeve b is mounted so as to {it 5 with a c ircumferentially projecting convex surface g in the bolster'tube c. Three or four balls h (Figs. 4 and 5) are pressed by a circularly bent Yleaf spring or a spring ring z' against the walls of the bolster tube c. s are notches engaging the balls so that the latter will be prevented from falling out when the spindle sleeve b is drawn out of the bolster tube c. t is a shoulder on the' footstep bearing lb. (Figs. 3 and 4) which will prevent the balls from falling into the "00 bolster tube c when the spring i is taken out.

In the improved bearing illustrated in Figures 2 and 3 the rollers Kare mounted in an annular cage fv; these rollers are mounted in a plurality of cylindrical holes spaced uniformly apart. A cover w closes i the cage Yu and is held in place by nibs kv which for this purposeare bent over so as to engagel ina'recess in the cover.

The rollers u are convex at their ends, to bear between said cover lw and the bottom of said cage /v. The latter is formed with a spherical outwardl bulging or convex end surface upon a har ground footstep plate y which is fixed, together with the outer annular race f, in the spindle sleeve b.

,The rollers fw work between the annular race f and the spindle a. y

Having now particularly described and ascertained th' nature of our said invention so c and in what manner the same is to be perL formed, we declare that what we claim is 1 1. A spinning spindle, a bolster tube, a bolster sleeve resiliently supported within the bolster tube, and having an exterior 951 spherically shaped enlargement acting upon the inner wall of the bolster tube for per- -mitting the oscillation of the bolster sleeve said' rollers having its lowermost portion i bevelled and resting upon said plate, and an enclosing top member forsaid rollers and cage secured to said bolster sleeve, and a spindle proper having a whirl and bearing upon said roller bearings and footstep bearlng.

2. In a spinning spindle of the character described, a spindle proper, a bolster tube, a bolster sleeve in said tube having an external enlargement near its upper end bearing upon the wall of said tube and constituting a fulcrum for the bolster sleeve, a roller bearing mounted in the upper end of the bolster sleeve above said enlargement and engaging the spindle proper, an additional bearing in the lower end of said bolster sleeve receiving the lower end of the spindle proper, and a plurality of bearing members resiliently mounted in the wall of the bolster sleeve at its lower end and engaging the wall of the bolster tube to yieldingly center said sleeve therein.

3. In a spinning spindle of the character described, a spindle proper, a bolster tube, a bolster sleeve in said tube having an enlarged cylindrical upper end positioned above the bolster tube and provided below said upper .end with an externally convex portion having rocking engagement with the inner surface of the bolster tube, a roller bearing mounted in said cylindrical upper end of the bolster sleeve and engaging the spindle proper, the lower end of said sleeve being provided with spaced openings in its wall, anti-friction members mov able through said openings, means within the bolster sleeve yieldingly coacting with said members to hold the same in rolling Contact with the wall of the bolster tube, and a fixed bearing within said bolster sleeve for the lower end of the spindle.

In testimony whereof we aix our signatures.

FRIEDRICH EISENLOHR. CARL UEBELEN. 

